Daniel



`D. MILLS'. 4Sewing Machine.

Patented Dec. 14, 1869.

Wi En 65595 N Parana, mwumngnphef, wmngm n. c,

The tubular arbore extends through a cavity, et, in the bottom part of the frame A,

and it is exposed to the flame of' a lamp or gas burner, a draft-hole, c'i", being provided in the upper end of' said cavity, so that the.

waxed thread, in passing through said tubular arbor, becomes heated and pliable.

The pinion e is either keyed to' the arbor can oscillating niotionby vthe action of' a cam` on the side of the diskG. The f'eedleverH has its fulcrum on a pivot, f, situatedon a level with the work, and it receivesan oscillating-motion by a cani mounted-on the shaft B. By placing the f'ulcruni of thefeed-lever on a level with the work, the point of the feeddog is brought down square upon said Work, which is not the case if the fulcrum be situated higher or lower than the level of thel work, and the2 oscillating motions of the feeddog and of the feed-lever are so timed that the feed-dog is first brought down uponthe' l work by the action of the feed-lever, then receives its oscillating motion, so as to push the work along; it is then raised fronnthe worl and carried back to its original position,

ready for the subsequent feed.

The connection between the feed-dog and feedlever is effected by a pivot, g, projecting from the free end of' theieed-leverand passing through aneye,- h, formed in the elbow of the feed-dog at'the point farthest removed from the arm t', vwhich carries a roller, j, that acts against .the cam on the side of' the disk C. Said 'eye or pivot-isA so situa-ted in relation-tothe work-ingf'aee of' 'the 'feed-dog and to the roller-arm i* that ity lies on that side of a vertical planeA passing through the working-face of' the feed-dog opposite to that on which the milenaria/is situated, whereby the pressure fof' 'the feed-dogagainst '-thework has a tendency to keepdthe-roller j in contact with its cam, thus rendering the feed motion sure and uniform. e This machine'is intended particularly for sewi-ngthe uppers of 'boots and shoes to the soles in what is technically known as turned work, andthe work-'is turned inside out and put on a'last in theu's'ual' "manner, a channel being'finade in the inner'surface of' the sole to receive the`stitches, as indicated in red outlines in Fig. 1 of the drawing,-'Fig. 3 representing at a and. b, respectively, thework before and after it is turned. 1 -f f -The last'is. secured in=a^lastholder, which is placed on a table,'(^not shown inthe drawing-pdand'said table is forced-iup by meansiof a spring or weight, so that the v-work will' be pressed up against the surface-gage lI. This gage is secured to the edge of the frame, and

it is provided with side flan ges r, which overl' lap the edges of' the vframe and prevent the gage from swinging out sidewise. A screw, s, retains lthe gage in position, and another screw, t, which' bears on the top edge of' said down, so that the work will be presented to -the-'nee'dle in the proper position. The correct position of the work is further insured outer end of a pin or slide, u, fitted into a cavity in the frame A and subjected tothe action of' a spring, @,which keeps said gage in coutact with the edge ofthe work and allows the same to follow the sinuosities thereof.

' This edge-gage also serves to retain the.. Vwork againstthe thrust of the needle; and to the frame A, and it carries. a set-screw, o, which acts on the slide u of the edge-gage at saine firmly in position while theneedle passes. though the work.' By adjusting the set-screwvthe-lockin,f lever can beniade to do its work ,with great precision and without fail.

Although this machine is, as before said, lparticullarly adapted to turned work,77 it can 1also be u'sed for welt-sewing bythe appliance :of a welt-guide to the'edge-gage. At one side of the-latter, and rigidly connected with it, is 1a slotted piece of ,sheet metal of' angular fori mation, as shown inY front and side elevation lin Fig. 4. The face a of the welt-guide is so inclined in relation to the face b, and the slot therein. so formed, that the inner edge of the iwelt, which is or may be fed from ,a strip of, any length, is bent orturned outward from Ethe upper or work at the point where the L stitching takes place, and is presented at )right angles, or nearly so, to the needle. In this way. the needle will go squarely through the welt instead of going obliquely through, as it would do if' the -welt were not so bent up.y Thecorrect operation of' the needle inretain. ing and releasing the loop of the thread at 4.the proper intervals is insured by the barbcoverer w, which is secured to a lever, M. 'This lever has its fuicrum on the rod D in the top of theLframe-A, and it issituated close to the side lof' the needle-lever E, and subjected to the action of alspring, x, which is secured to the edge of the needle-lever. A cam, y, o n the shaft B acts .on thev lever M, and serves to impart to the barb-'coverer its own distinct motion, as will be presently explained. The free end of the lever M is provided with an oblong slot, z, through which passes a screw, a', which is secured' in the needle-lever. The motion of the barb-coverer in relation to ythe needle is as follows: When the needle enters lthe work the barb-coverer is resting against the work, being'pressed up by the spring fr, which is fastened to the needle-lever."

When the needle recedes the barb-eoverer regauge, serves to adjust the same up and by the edge gage J, which is secured to the effect this purpose a locking-lever, K, is ap-' plied, which is operated by a cani inthe sideA of the disk C. This lever has its fulcrum on= a pivot, j', secured in a lug projectingl fromthe proper intervals, and serves to retain the:l

`mains stationary untilthe barb is covered; then `the' set-screw a in the needle-lever strikes the end of the slot z inthelever M, and carries the barb-coverer up with it until near the outerend of its motion,when the barb-cov 'erer receives an additional outward movement i by its own cam, and is retained there, while the needle comes back, and it does not overtake the needle until the same is near entering its work'again. By these means the loop is prevented from slippingout of the barby p In this specification l have described some parts that I considernovel, and of my invention, .yet have not claimed here, as they are made the subject-matter of another application for a paterit now pending; and, there- A fore, y

Having described this invention, and the manner in which the same is, or may be, carried intoeffect, what Inow claim,and desire t0 secure by Letters Patent, isp 1: An organization, substantially as described, consisting of th'e following elements in combination: lirst, abarbed needle mounted on an oscillating arm or lever 'operated by a suitable cam in such manner that the power is applied tothe needle-arm `between the needle and its center of oscillation; second, a looper and its actuating mechanism, soas to eifect ,the chai n-stitch in connection withsaid needle; third, a top-feed mechanism `propelling the work during theintervals of stitches gffourth,

p one or more gages for` guiding and` holding the work in the line of the seam to be made. 2. rBhe arrangement, substantially as herein described, of a cam disk or disks mounted on one and the same shaft, and to operate as and by the means hereinafter shown and set forth: first, the needle-arm when the same is a lever of the third order; second, the looper having a reciprocating rotary motion; third, th'e'feed with its up and down and back and forth movement; fourth, the edge gage with its locking mechanism; and, fth, the barb-coverer. ,.4

3. The combination, with a barbed needle mounted on an arm, being alever of the thirdv order, and a barb-coverer mounted in like manner 'and upon the same fulcrum with the needle-arm, of independent cams mounted on the same shaft to operate the needle andthe barbcoverer, in the manner and vfor the purposes herein set forth.

4. The combination, with the l`n'tedle and barb-coverer oscillating upon 'the same fulcrum, and operated by cams, as described, of a spring and a slot and stud or their mechanical equivalents, formed on the barb-coverer and needle-levers, respectively, whereby at the proper lintervals the action of the barb-coverer' is regulated and controlled by the movement of the needle-arm, as herein set forth.

5. Thelooper, mounted on the 'end of a tubular shaft, through which the thread, with which the looper is supplied, passes' when said shaft is arranged to pass through the cavity in the frame, and there exposed tothe action of a iiame, substantially as herein shown and` described.

VIn testimony whereof I have signed my name tothis' specification before two subscribing witnesses. v L

DANL. MILLS. Y

,Witnessesz M. BAILEY, A. PoLLoK. 

